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A transistor is used in an amplifier circuit in common emitter mode. If the base current changes by 100 μ A , it brings a change of 10 mA in collector current. If the load resistance is 2 kΩ and input resistance is 1 kΩ , the value of power gain is x × 10 4 . The value of x is _____ .

Correct answer

0

Step-by-step solution

β A C = Δ i C Δ i B = 10 × 10 - 3 100 × 10 - 6 = 100 Power gain,   A P = ∆ i C 2 R o u t ∆ i B 2 R i n = β A C 2 R out   R i n = 100 2 × 2 × 10 3 10 3 = 2 × 10 4 Therefore, x = 2

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